hubbard



G. W. HUBBARD. SYRINGB FOR BNEMA GIVING PURPOSES.

No. 31,318. Patented Feb. 5, 1861.

ated by the patient alone with the greatest UNITED STATES PATENT FFIOE.

GEO. YV. HUBBARD, OF NEYV YORK, N. Y.

ENEMA-SYRINGE Specification of Letters Patent No.

To all whom it may concern:

Be it known that I, GEORGE 1V. HUBBARD, of the city, county, and Stateof New York, have invented a new and Improved Syringe for Enema-GivingPurposes; and I do hereby declare that the following is a full, clear,and exact description of the same, reference being had to the annexeddrawings, making a part of this specification in which Figure 1, is aVertical central section of my invention. Fig. 2, a horizontal sectionof same taken in the line 00, 00, Fig. 1.

Similar letters of reference indicate cor responding parts in the twofigures.

The object of this invention is to obtain a simple, eflicient, and veryportable instru ment. for enema-giving purposes, and one which willadmit of being applied and oper facility.

Syringes of this class, those most generally used, are constructed withan elastic or collapsible chamber and a nozzle, the liquid beingexpelled from the chamber by simply compressing the same. This is a verysimple instrument but not by any means an economical one, as thechambers which are of india rubber soon rupture and the instru ment isrendered worthless.

The within described invention is constructed in a very simple mannerbut which admits of a durable instrument being furnished at a moderatecost, and one it is believed which may be used with greater facilitythan the ones previously mentioned.

To enable those skilled in the art to fully understand and construct myinvention I will proceed to describe it.

A, represents a cylinder which may be constructed of metal or otherrigid substance. This cylinder has a smaller cylinder B, fittedconcentrically within it, both cylinders being closed or covered at thetop by the same-cap a. The lower ends of the two cylinders are fitted toa base C, by having the lower end of cylinder B, screw on asemi-spherical chamher 5, at the center of the base G, as shown clearlyin Fig. 1. The lower ends of both cylinders rest on" a circular packingc, of leather or other suitable material placed on the base.

Vithin the smaller cylinder B, there is 31,318, dated February 5, 1861.

placed a piston D, the rod (Z, of which passes up through the center ofcap a. Within the cylinder B, and below the piston D, there is placed aspiral spring E, the lower end of which rests on the top of the chamberZ). The spring E, has a tendency to keep the piston D, at the upper endof the .cylinder as shown in Fig. 1.

\Vithin the semispherical chamber 7) there is placed a ball valve 6,which is directly over an opening or passage f, in the base C.

The interior of the cylinder A, is an air chamber which communicateswith an opening or passage 9, in the base, the passage be ing incommunication with an elastic tube F, which is provided with a nozzle h,at its end. The air chamber communicates with the interior of thesmaller cylinder B by means of a passage 2', which extends from thesemi-spherical chamber Z), through the base C, and has a valve j, at itsouter end opening upward.

The bottom of the base C, has three or more projections is, on it tokeep the orifice of passage f, above the surface on which the base 0,rests or is supported.

The operation is as follows: The patient places the instrument in anupright position in a vessel G containing the liquid to be used, insertsthe nozzle it, into the rectum, and depresses the piston D, withincylinder B, and allows it to rise by the action of spring E. Areciprocating motion is thus given the piston D, by simply pressing downthe plunger each time after being elevated by the spring. The smallercylinder B, fills as the piston D, rises, the ball valve 0, openingupward as the piston ascends. As the piston is forced down the valve 6,closes and the liquid in B, is forced through passage 2',

into the air-chamber or cylinder A, the valve j, opening upward. Theliquid passes from the air chamber through the passage g, and throughthe tube F, and nozzle h. The gravity of the instrument is sufficient tokeep it in proper position while being operated.

The instrument it will be seen may be placed in a large basin containingthe liquid so that any desired quantity may be injected into the systemat one operation. This, so far as I am aware is an advantage notattending other syringes, the latter requiring A syringe constructed inthe particular to be filled before being used and therefore mannerherein shown and described so as to limited in operation to the capacityof their operate as set forth. cylinders or reservoirs. GEO. W. HUBBARD.

5 Having thus described my invention What Vitnesses:

I claim as new and desire to secure by Let- 1 G. V. OOWTAN ters Patent,is LEWIS A. TUCKER.

